Figure 2From: Levels of gastrin-releasing peptide and substance P in synovial fluid and serum correlate with levels of cytokines in rheumatoid arthritisBox–whisker plots showing concentrations in serum for the patients with rheumatoid arthritis and healthy controls. (a) Soluble tumour necrosis factor receptor 1; (b) bombesin/gastrin-releasing peptide. Boxes show the 25th and 75th percentiles; horizontal lines in boxes show the medians; whiskers show the 10th and 90th percentiles. *P < 0.05.Back to article page